package jdbc;

import socket.DBUtil;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

/**
 *删除用户操作，根据输入的用户名删除该用户
 * 要求:使用预编译SQL
 */
public class Test2 {
    public static void main(String[] args) {
        UserInfo inputObject = InputUtil.getInputObject(new UserInfo(), "用户删除", "删除");
        try (
                Connection connection = DBUtil.getConnection();
        ){
//            String sql = "SELECT id,username,password,nickname,age FROM userinfo WHERE username=? AND password=?" ;
            String sql ="DELETE FROM userinfo WHERE username=?; ";
            PreparedStatement ps = connection.prepareStatement(sql);
            ps.setString(1,inputObject.getUsername());
            //密码：asd' OR '1'='1
            //UPDATE删除用下面这个
            //int num = ps.executeUpdate();
            int num = ps.executeUpdate();
            if (num>0){
                System.out.println("删除成功");
            }else {
                System.out.println("删除失败");
            }
        } catch (SQLException e) {
            throw new RuntimeException(e);
        }

    }
}
